JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
REVIEW
Heritable factors distinguish two types of alopecia areata.
Dermatologic Clinics 1996 October
Alopecia areata (AA) has been shown to be associated with the inheritance of HLA class II alleles. HLA-DQ3 appears to be the general susceptibility allele for AA. Patients with long-standing disease patterns, namely, longterm patchy AA and long-term alopecia totalis and alopecia universalis (AT/AU), can be differentiated by their particular HLA associations. Long-standing AT/AU patients have unique and highly significant associations with HLA antigens DR4, DR11, and DQ7. A complex of early onset, disease severity, family incidence, and associations with HLA DR antigens are characteristic of long-standing AT/AU as distinct from long-standing patchy AA.
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